Natural organic matters as intrinsic microorganic pollutants are a major concern in drinking water in scopes of water supply systems operation, consumer health, aesthetic and so on. This study was done on the real water samples that was first experienced in using integrated processes (pre-ozonation, enhanced coagulation and bio-augmented carbon) for upgrading existing processes of water treatment plant. The parameters of TOC, DOC, UV₂₅₄, SUV, appearance color, turbidity, pH, TDS, heterotrophic plate count (HPC) and residual bromate were tested after each process. It was revealed that, using 0.5 mg O₃/mg TOC, 15 mg/l polyaluminium chloride (PACl), pH = 7.5 and empty bed contact time (EBCT) of 5 min in bio-filter, the removal of TOC is 87%. The concentration of TOC in finished water was 0.8 mg/l that less than standard limit for chlorination (2 mg/l) without formation of bromate as carcinogenic by-product. Upgrading of existing plant by suggested process, not only could remove natural organic matters (NOMs) significantly but also protect reservoir and distribution network against regrowth of biofilm.

在供水系统运行，消费者健康，美观等方面，作为内在微生物污染物的天然有机物是饮用水的主要关注点。这项研究是在真实的水样上完成的，该水样最初是在使用集成工艺（预臭氧化，增强混凝和生物增强碳）来升级水处理厂现有工艺中获得的。在每个过程之后，测试TOC，DOC，UV ₂₅₄，SUV，外观颜色，浊度，pH，TDS，异养菌板数（HPC）和残留溴酸盐的参数。结果表明，使用0.5 mg O ₃/ mg TOC，15 mg / l聚氯化铝（PACl），pH = 7.5和在生物滤池中空床接触时间（EBCT）为5分钟，TOC的去除率为87％。最终水中的TOC浓度为0.8 mg / l，低于氯化标准浓度（2 mg / l），没有形成致癌性副产物溴酸盐。通过建议的过程对现有工厂进行升级，不仅可以显着去除天然有机物（NOM），而且还可以保护储层和分配网络免受生物膜的再生。